Jumbo carbon block filter cartridge we usually see at POE end like basement and commercial water filters, to filter out chlorine for general use of a house. The sizes are usually 4.5"x10" and 4.5"x20", material options are NSF certified coconut carbon.
B series carbon block filter cartridges is ordinary carbon block filter cartridges with white plastic caps and black gaskets, usual sizes are 2.5"x10" and 2.5"x20", suitable for water treatment and industrial use, it's the budget series of carbon filter from SF's factory in China.
H series carbon block filter cartridges with black single molded caps, widely used in plating industry, the length can be 10", 20", 30" and 40", the carbons were chosen to remove certain contaminates from industrial processing liquids.
Granular activated carbon filter cartridge (UDF filter cartridge or GAC filter cartridge) is a tube-like filter cartridge filled coal or coconut based activated carbon granules, use as pre-filter of RO water systems, our carbon are all NSF certified.
MCB series molded carbon block filter is made of PAC (powdered activated carbon) and polyester fiber, with high adsorbtion capacity and long service life. Molded blocking method results in lower carbon fine release and higher efficiency.